Lenovo System x3500 M4 Installation And Service Manual page 276

Attention: To avoid breaking the retaining clips or damaging the DIMM connectors, handle the
clips gently.
Step 5. Move the DIMM retaining clips on the side of the DIMM connector to the open position by pressing
the retaining clips away from the center of the DIMM connector.
Figure 178. Memory module removal
Step 6. Using your fingers, lift the DIMM out of the DIMM connector.
If you are instructed to return the server component or optional device, follow all packaging instructions,
and use any packaging materials for shipping that are supplied to you.
Memory module installation
The following notes describe the types of DIMMs that the server supports and other information that you
must consider when you install DIMMs.
• When you install or remove DIMMs, the server configuration information changes. When you restart the
server, the system displays a message that indicates that the memory configuration has changed.
• The server supports only industry-standard double-data-rate 3 (DDR3), 800, 1066, 1333, 1600, or
1866 MHz, PC3-6400, PC3-8500, PC3-10600, PC3-12800, or PC3-14900 registered or unbuffered,
synchronous dynamic random-access memory (SDRAM) dual inline memory modules (DIMMs) with
error correcting code (ECC). See http://www.lenovo.com/ serverproven/ for a list of supported memory
modules for the server.
– The specifications of a DDR3 DIMM are on a label on the DIMM, in the following format.
– gggggeRxff PC3v-wwwwwm-aa-bb-ccdwhere:
– ggggg is the total capacity of the DIMM (for example, 1GB, 2GB, or 4GB)
– eR is the number of ranks
• 1R = single-rank
• 2R = dual-rank
• 4R = quad-rank
– xff is the device organization (bit width)
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System x3500 M4 Installation and Service Guide